Thanks for the replies. The reason I wouldn't use a shaft/blade combo is because
(a) KOHO or any other ABS pattern is nothing like I use
(b) the price of the replacing blades is more expensive than purchasing a OPS
(c) OPS last longer as it doesn't wear as much as a wood blade

I did check out the Sherwood T50 (Ryan pattern) and it's not even close to the TKACHUK pattern on my Louisville TPS Response --- the search continues